This extract from a 2011 GCHQ Network Analysis Centre document details progress in the operation against Belgian telecommunications company Belgacom in the first quarter of 2011: see the Intercept article Operation Socialist: The Inside Story of How British Spies Hacked Belgium’s Largest Telco, 13 December 2014.

﻿Successful MyNOC surge effort against GRX Operators, that enhanced network
knowledge of the various operators, their customer sets, knowledge of and
access to both encrypted and unencrypted GRX ...

This extract from a 2011 GCHQ document details progress in the operation against Belgian telecommunications company Belgacom in the second quarter of 2011: see the Intercept article Operation Socialist: The Inside Story of How British Spies Hacked Belgium’s Largest Telco, 13 December 2014.

﻿CNE Access to BELGACOM GRX Operator: (GREEN) Following the successful
NAC MyNOC OP SOCIALIST to provide CNE access to the BELGACOM GRX
Operator (MERION ZETA), the NAC have continued to provide a...

This GCHQ presentation from 2011 provides the background to the agency’s hacking attack on Belgacom: see the Intercept article Operation Socialist: The Inside Story of How British Spies Hacked Belgium’s Largest Telco, 13 December 2014. gchq-mobile-networks-in-my-noc-world

﻿TOP SECRET STRAP 2
Mobile Networks in
World
Head of GCHQ NAC
n/\c
This information is exempt from disclosure under the Freedom of Information Act 2000 and may be subject to exemptio...

This extract from a 2011 GCHQ document details progress in the operation against Belgian telecommunications company Belgacom in the third quarter of 2011: see the Intercept article Operation Socialist: The Inside Story of How British Spies Hacked Belgium’s Largest Telco, 13 December 2014.

﻿CNE Access to BELGACOM GRX Operator: (GREEN) Following the successful
NAC MyNOC OP SOCIALIST to provide CNE access to the BELGACOM GRX
Operator (MERION ZETA), the NAC have continued to provide a...

This extract from a 2011 GCHQ document details progress in the operation against Belgian telecommunications company Belgacom in the final quarter of 2011: see the Intercept article Operation Socialist: The Inside Story of How British Spies Hacked Belgium’s Largest Telco, 13 December 2014.

﻿CNE Access to BELGACOM GRX Operator: (GREEN) This work has been very
successful and has enabled not only CNE but also Crypt Ops by identifying a large
number of VPN exploitation opportunities. T...